The full name of this Gundam toy is actually the DX Transforming
Gundam GP01-fb. It comes from the Gundam series "0083: Stardust
Memory".

This is one of the shining stars of Bandai's DX Mobile Suit in Action
line.

Everything you could want in a Gundam toy, this one has it. Articulation,
gimmicks, transformation, accessories - you name it. The only thing missing
is some kind of light-up action, but we can forgive that.

This figure can be separated with three parts and combine back to Gundam
again. These three parts are

"A-part"(Upper torso),

"B-part"(Legs)

"Core block"(Cockpit)

Core block can also transform into "Core Fighter II"

Equipment set includes, a beam rifle, beam saber, and shield. There is
some assembly of these accessories required.

There are some really great details here. You can remove the leg armor
to see the inner skeleton, open up the cockpit, and even activate shoulder
boosters by lifting up a flap.